Hod elevator or hoist.



Patented Aug. 5, I902.

F. C. DEY.

HOD ELEVATOR 0B HOIST Application filed Sept. 1 1, 1901.)

3 Sheets-Sheet I.

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INVENTOR WITNESSES:

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PatentedAug. 5, I902.

F. c. DEY.

HOD ELEVATOR DR HOIST.

(Application filed Sept. 14, 1901.) I

3 Sheets-$heet 2.-

(No Model.)

' 'INVENTOR ATTORNEYS.

TNE uomavs PETERS co. FNOTO-LITHO. wAsumomu, a. c.

No. 706,305. v Patented Aug. 5, I902.

F. C. DEY.

HOD ELEVATOR 0B HOIST. (Applicatiog filed Sept. 1 1, 1901.)

(No Modei.) 3 Sheets-Sheet 3-.

WITNESSES: INVENTOR;

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rrnn STATES ATENT OFFICE.

FRANK G. DEY, OF NEWARK, NEW JERSEY.

HOD ELEVATOR OR HOIST.

SPECIFIGATIONforming part of Letters Patent No. 706,305, dated August 5,1902. Application filed September 14, 1901. Serial No. 75,429. (Nomodel.)

To all 2072 0121, it may concern.-

Be it known that I, FRANK G. DEY, a citizen of the United States,residing at Newark, in the county of Essex and State of New Jersey, haveinvented certain new and useful Improvements in Hod Elevators or Hoists;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled intheart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to characters of reference markedthereon, which form a part of this specification.

The objects of this invention are to provide a hod hoist or elevatorwhich can be operated bya continuously-running engine,and to thusdispense with an engineer; to obtain an arrangement whereby the hods onreaching the top will automatically stop the hoister or elevator properwithout afiecting the engine; to enable the elevator-chain to beadjusted to the proper tension, and to secure other advantages andresults, some of which may be referred to hereinafter in connection withthe description of the working parts.

The invention consists in the improved hod hoist or elevator hereindescribed and in the arrangements and combinations of parts of the same,all substantially as will be hereinafter set forth, and finally embracedin the clauses of the claim.

Referring to the accompanying drawings, in which like characters ofreference indicate corresponding parts in each of the several figures,Figure 1 is a side elevation of the improved device. Figs. 2 and 3 areside and front elevations,respectively,of the lower part of theelevator; and Figs. 4 and 5 are corresponding side and front elevations,respectively, of the upper part of the elevator.

In said drawings, a a a indicate the floorjoists of the second floor ofthe building in process of construction and on which I have shown thetop frame'of my hod-hoister located, although it will be understood thatmy device can be employed in connection with any number of floors orstories, as is common in the art. The bottom part of the hoister orelevator is located on the first floor, and comprises a rigidrectangular frame I), held upright by means of a suitable base I) andbrackets b? to hold the said frame firmly in place. A stick of timber cis usually placed across the top of the frame I) and upright pieces (1wedged endwise between said stick 0 and a similar stick 0' laid againstthe under side of the joists a. The said frame Z2 afiords bearings' forthe driving-pulley e, speed-reducing gearing f,and sprocket-wheel g; butthe boxes h for the shafts of said parts are not bolted directly to theframe b, but to a sliding frame 2', which can be vertically adjustedupon the stationary frame 1). Said adjustable frame comprises sidepieces formed of flat strips of metal lying against the side bars of theframe I) and cross-pieces i, extending between the said side pieces atthe top and bottom of the adjustable frame. A screw j,workingloosely inthe upper part in the stationary frame b, as atj, and having itsthreaded lower por tion extending through a correspondingly threadedseat in the upper cross-piece c" of the adjustable frame 2' enables saidframe to be moved up and down with reference to the stationary frame I).The flat metal side pieces of the adjustable frame 2' slide throughclasps 7a, projecting over their opposite edges from the stationaryframe,and preferably the boxes h for the various shaft-bearings are heldout from the adjustable frame to which they are bolted by means ofnarrower blocks is, placed between so as to enable the said boxes htopass the clasps 7c. Notches Z Z may be cut in the edges of the flat sidepieces of the adjustable frame at suitable points to enable the saidframe to be lifted out of the clasps 7c, and thus removed from thestationary frame I) when necessary for transportation or the like.

The source of power best adapted for use with my device is some form ofhydrocarbonengine or electric motor; but any other may be employedequally well. Said engine is preferably inclosedin a box-like casing m,and the pulley n on the driving-shaft n, is connected with the pulley eon the bottom frame I) by means of a belt 1%, which is normally loose.The up-and-down movement of the adjustable frame e' merely increases ordiminishes the looseness of said belt without in any way disturbing therelation of the pulleys e and n.

It will be understood by those skilled in the art that this verticaladjustment'of parts on the bottom frame of my device is to en'- able theconveyor-chain to be always kept under the proper tension which isessential for the proper working of the device, and the objects of theconstruction described are to enable such tension regulation to be madewithout disturbing the power connection to said parts.

The upper part of my device comprises a frame 0, similar to the bottomframe I) and held upright by a suitable base 0, standing upon the floorto which it is desired to hoist material. Said frame provides at itsupper part bearings forashaftp, bearinga sprocketwheel p for theconveyer-chain, and preferably the said shaft 1) is also connected bysuitable gearing q with a crank g, by means of which the apparatus canbe operated by hand-power if necessary or desirable. The conveyer-belt7' extends around the sprocketwheels of the upper and lower frames, asis common, and is composed of the usual side chains 0", connected bycross-bars r at suitable distances apart, and on which hods 3 may behung in the ordinary manner.

As above stated, one object of my invention is to secure an automaticstopping of the hoister or elevator when a hod is raised to the properpoint, and to this end Iprovide upon the top frame 0 a lever t, pivotedupon one of the side pieces of the frame and extending across said framein the path of the hods. To the end of said lever at the opposite sideof the conveyer-belt from which it is pivoted is attached a rope a,which extends downward in same general line with the con veyer-belt andis led through suitable idle pulleys n on the bottom frame I) and 'w onthe engine-casing m to a belt-tightening lever 2 within saidengine-casing. The said lever 2 has its upperend fulcrumed on the easingm, as at 3, and intermediate of its two ends carries an idle wheel 4,adapted to press upon the belt m, and tighten the same, so that theengine will transmit power to the elevator. The normal position of theleverzf on the elevator permits the belt-tightening lever 2 to drop intoengagement with the belt m. When, however, a hod comes up on theconveyor-belt 1' and the workman is not there to remove the same beforeit reaches the lever 15, said hod strikes said lever and raises thesame. This produces a pull upon the rope a, which raises thebelt-tightening lever 2, removes the wheel 4 from the belt m,and stopsthe transmission of power to the elevator, so that the hod is carried nofarther. In this way the engine can run continuously at a uniform speed,and the services of an engineer to tend said engine and start and stopthe same are not needed; but the hods themselves automatically stop theelevator when they have been raised to the proper height. Under someconditions it might be possible that the two sides of the conveyor-beltswould not be properly balanced, so butthat even when the powertransmission was cut off the belt would continue to move by gravity. Toprovide against this emergency, I place upon a portion of the peripheryof the pulley e on the bottom frame I) a brake 5 of any cornmonconstruction controlled by lever 6, and this lever I connect by a rope 7with the rope a, running from the lever 25 on the top frame of thehoister. Said rope 7 is left a little more slack than the rope 1L, andthus the brake 5 does not come into play if the mere stopping of powertransmission suffices to stop the conveyer-belt; but if not then therope 7 is tightened and the brake 5 brought into play to positively stopthe conveyor-belt r.

Preferably the lever t, to be engaged by the hods, is pivoted upon theend of a pin 15 projecting from the frame 0, and said pin is bent orcurved laterally between the said frame and lever, as at 6 Thus byturning the pin in its seat in the frame a circular movement of itsouter end is obtained which enables the fulcrumal point of the lever tto be adjusted in height. Nuts 29 25 on the pin i are adapted to bescrewed against the frame 0 to clamp the pin in any desirous position.

It will. be seen from the above description that by my construction Ithus provide a hoist or elevator to which power can be applied at thebottom without interferring with the necessary adjustments to secureproper tension of the conveyor-belt and one, moreover, to which powercan be continuously and uniformly applied and the elevator control itsown movements automatically.

Having thus described the invention, what I claim as new is- 1. In a hodhoist or elevator, the combination of a rigid rectangular support orframework b, adapted to be stationed in upright position at the bottomof the hoist, means for holding said supportin fixed position,a shorterrigid rectangular frame t', comprising a single integral castingarranged flatwise against one side of said support and adapted to slidevertically thereon, means connecting said frame to said support andpreventing lateral shifting thereon or outward movement therefrom whilepermitting endwise adjustment, a single adjusting-screw passing looselythrough the middle of the top piece of said support and working in athreaded socket in the corresponding end piece of the frame, transverseshafts journaled near their opposite ends upon the opposite uprightlateral portions of said frame and lying approximately in the plane ofthe frame, and a conveyer-belt pulley, driving-pulley andconnecting-gears mounted on said shafts.

2. In a hod hoist or elevator having upper and lower bearings, anendless conveyor-belt passing around said bearings, acontinuouslyoperating source of power, means normally transmitting powerfrom said source of power to the conveyor-belt, and controlling meansadapted to be engaged by a load on the conveyer and disengage saidtransmitting means to stop the conveyer or belt without stopping thesource of power.

3. In a bed hoist, a conveyer belt, a sprocket-wheel and driving-pulleyat one end of said belt, a suitable source of power and a belt adaptedto transmit motion to the driving-pulley, means normally tightening saidbelt, and a lever '6, adapted to be engaged by a load on theconveyer-belt and being connected to said poWer-belt-tightening means.

4. In a hod-hoist having a conveyer-belt and sprocket-pulleys therefor,a loose powerbelt connected to the bottom sprocket, a le ver 2, adaptedto be engaged by a load on the conveyer-belt, a lever having afriction-pill" ley for tightening the power-belt and a connecting-ropeextending from said lever 25, to the belt-tightening lever.

5. In a hod-hoist having a lower sprocketwheel and driving-pulley, anupper sprocket, and a conveyer-chain, a loose power-belt passing aroundsaid driving-pulley, tightening means therefor, a brake for said pulley,a lever 2, adapted to be engaged by a load on the conveyer, and meansconnecting said lever to the said brake and power belt tightening means.

6. In a hod hoist or elevator, a conveyerbelt, a pulley geared to saidbelt, a continuously -rotating driving-pulley, a loose belt passed oversaid pulleys, a pressure-roller normally tightening said belt totransmit tinuously-rotating driving-pulley, means for connecting anddisconnecting said pulley and driving-pulley, a lever adapted to beengaged by a load on the conveyer-belt, and means connecting said leverto said brake and to said connecting and disconnecting means whereby thelatter are operated conjointly to stop or start the conveyer beltirrespective of the driving-pulley.

S. In a hod-hoist the combination with the conveyer belt, supportingmeans therefor, and driving means, of a lever 25, connected to thedriving means and adapted to be operated by a load on the conveyer todisengage the driving means, said lever being fulcrnmed on the outer endof a crank-shaped pin 25, adapted to be turned in its seat to adjust theposition of the lever.

In testimony that I claim the foregoing I have hereunto set my hand this3d day of September, 1901.

FRANK O. DEY;

Witnesses:

CHARLES H. PELL, RUSSELL M. EVERETT.

